Step Down Adapter, Bore Diameter 3/4 in, Bore Depth 1 5/8 in, Adapter Outside Diameter 1 3/4 in, Shaft Length 1 1/4 in, Shaft Diameter 1/2 in, Overall Length 3 1/2 in, Adapter Type Step Down, Screw Thread Size 1/4 In. -28, Adapter Material Steel, Adapter Material Finish Black Oxide, Adapter Material Grade ASTM A108, Bore Tolerance + 0.003 /- 0.000, Screw Length 5/8 in, Screw Material Steel, Screw Material Grade ASTM A574, Shaft Tolerance - 0.000 /- 0.003 in, System of Measurement Inch.
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